EPR spectra and linewidths of Mn2+ in calcite
The constants corresponding to the spin-Hamiltonian terms without cylindrical symmetry for Mn2+ in calcite (CaCO3) have been measured by EPR techniques; it is shown that the principal axes of the spin Hamiltonian are rotated 15.5°from the crystal axes. This value allows us to obtain information abou...
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1975
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| LEADER | 04383caa a22005777a 4500 | ||
|---|---|---|---|
| 001 | PAPER-18686 | ||
| 003 | AR-BaUEN | ||
| 005 | 20241127091016.0 | ||
| 008 | 190411s1975 xx ||||fo|||| 00| 0 eng|d | ||
| 024 | 7 | |2 scopus |a 2-s2.0-0041506828 | |
| 040 | |a Scopus |b spa |c AR-BaUEN |d AR-BaUEN | ||
| 100 | 1 | |a Barberis, G.E. | |
| 245 | 1 | 0 | |a EPR spectra and linewidths of Mn2+ in calcite |
| 260 | |c 1975 | ||
| 270 | 1 | 0 | |m Barberis, G.E.; Departmento de Fisica, Universidad de Buenos Aires, Ciudad Universitaria, Buenos Aires, Argentina |
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| 504 | |a Wyckoff, R.W.G., (1949) Crystal Structures, , Interscience, New York | ||
| 504 | |a Barberis, G.E., Calvo, R., (1973) Solid State Commun., 12, p. 963 | ||
| 504 | |a Shaltiel, D., Low, W., (1961) Phys. Rev., 124, p. 1062 | ||
| 504 | |a Van Wieringen, J.S., Rensen, J.G., Proceedings of an International Conference in Jerusalem, 1963 | ||
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| 504 | |a Douglas, B.E., McDaniel, D.H., (1965) Concepts and Models of Inorganic Chemistry, , Blaisdell, New York | ||
| 504 | |a Hutchings, M.T., (1964) Solid State Physics, 16. , edited by, F. Seitz, D. Turnbull, Academic, New York | ||
| 506 | |2 openaire |e Política editorial | ||
| 520 | 3 | |a The constants corresponding to the spin-Hamiltonian terms without cylindrical symmetry for Mn2+ in calcite (CaCO3) have been measured by EPR techniques; it is shown that the principal axes of the spin Hamiltonian are rotated 15.5°from the crystal axes. This value allows us to obtain information about the charge distribution of the carbonate ligands. Our result is in agreement with the predictions of a simple covalent model for the carbonates. We measured also the angular variation of the linewidth of an EPR transition; our data allow us to explain the source of the inhomogeneous broadening for Mn2+ in our sample as random internal stresses. We compare our results with previous data obtained for Mn2+ in CaWO4 where the source of broadening is a distribution of point defects in the sample. A method for finding the source of inhomogeneous broadening in sites of low symmetry is discussed. © 1975 The American Physical Society. |l eng | |
| 593 | |a Departmento de Fisica, Universidad de Buenos Aires, Ciudad Universitaria, Buenos Aires, Argentina | ||
| 593 | |a Carrera del Investigador Cientifico, Consejo Nacional de Investigaciones Científicas y Técnicas, Argentina | ||
| 700 | 1 | |a Calvo, Rafael A. | |
| 700 | 1 | |a Maldonado, H.G. | |
| 700 | 1 | |a Zarate, C.E. | |
| 773 | 0 | |d 1975 |g v. 12 |h pp. 853-860 |k n. 3 |x 01631829 |w (AR-BaUEN)CENRE-397 |t Physical Review B | |
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